Abstract: Curricular innovations in the teaching of physics have become increasingly necessary for students to see this science as part of their daily life, as well as the language that translates natural phenomena. From this budget, the intervention that originated the present investigation sought to promote an innovation in the teaching of Physics in a Brazilian public school. Based on a contextualized and interdisciplinary approach, mediated by Sequences of Teaching and Learning (STL), the work aimed to work on Solar Physics contents. he research contemplated two interconnected aspects: (i) joint university-school development and validation of an STL as a didactic tool and (ii) investigation of aspects that inluence teaching practice in the face of epistemic dimensions (processes that point to teaching-learning) and pedagogical (teacher-student relations, student-student and student-knowledge). he adopted methodology was qualitative, justified by the semi-structured interviews with the teacher and the accompaniment of the classes, in addition to continuous discussions about the STL, being the analyzes developed from the assumptions of the didactic rhombus. Among the results found, the following stand out: the association between professor and researcher; the viability of curricular and methodological innovation in Secondary Education focused on Solar Physics and the STL as a didactic tool that allowed the teacher to work in an innovative way with interdisciplinary, non-compartmentalized classes.

Resumen: Las innovaciones curriculares en la enseñanza de Física se han vuelto cada vez más necesarias para que los alumnos pasen a ver esta ciencia como parte de su cotidiano, así como el lenguaje que traduce fenómenos naturales. A partir de este presupuesto, la intervención que originó la presente investigación buscó promover una innovación en la enseñanza de Física en una escuela pública brasileña. A partir de un enfoque contextualizado e interdisciplinario, mediado por Secuencias de Enseñanza y Aprendizaje (SEA), el trabajo tuvo como objetivo trabajar contenidos de la Física Solar. La investigación contempló dos vertientes interconectadas: (i) elaboración conjunta universidad-escuela y validación de una SEA como herramienta didáctica e (ii) investigación de aspectos que influencian la práctica docente frente a las dimensiones epistémicas (procesos que apuntan a la enseñanza-aprendizaje) y pedagógicas (relaciones profesor-alumno, alumno-alumno y alumno-conocimiento). La metodología adoptada fue cualitativa, justificada por la realización de entrevistas semiestructuradas con el profesor y acompañamiento de las clases, además de continuas discusiones sobre las SEA, siendo los análisis desarrollados a partir de presupuestos del rombo didáctico. Entre los resultados encontrados, se destacan: la asociación entre profesor e investigador; la viabilidad de innovación curricular y metodológica en la Educación Secundaria enfocada en la Física Solar y las SEA como herramienta didáctica que le permitió al profesor trabajar de manera innovadora con clases interdisciplinarias, no compartimentadas.

A dip coating system was projected and constructed to deposit a large range of thin films onto solid substrates. A microcontroller was used to control the deposition system. As an example of application multilayer graphene (MLG) films were deposited onto glass slices in order to obtain conductive films with relatively good light transmittance. The MLG flakes were obtained using natural graphite and isopropyl alcohol resulting in three dispersions treated in ultrasound for 30, 60 and 90 minutes, respectively. Using atomic force microscopy, UV-Vis spectrometry and an electrometer the film characterizations were performed. MLG flakes about 13 nm thick, 10 mµ2 of area were observed using AFM. In films obtained with 35 immersions the electrical resistance and the resistance sheet reached 1.8 kΩ and 1.9kΩ/square respectively. The light transmittance reached 10-20% while films obtained with dispersions treated for 60 and 90 minutes were electrically continuous. Thus, conductive films can be used in chemiresistor sensors, electrochemical and supercapacitors electrodes.